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Operated in the USA
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Double Flex Chain
Bar and pin chain more commonly known as double flex chain is designed for heavy-duty multi-directional applications that require a high-strength flex capable chain. Its simplistic "bar and pin" design makes it extremely economical for the general application type it's seen in and capabilities that this style of Engineer Class chain has to offer. We stock the widest selection of double flex chains included a non-metallic plastic double flex chain. We also supply standard and custom size double-flex sprockets.
Double Flex Chain Features
- Induction Hardened Pin & Bearing Surfaces
- Induction Hardened Sliding Surfaces
- Effective Two Plane Rotating Operation
- Manufactured With High-Strength Steel Alloy Material
Double Flex Chain Sizes
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Center Bar
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Side Bar Pitch
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Min. Flex Radius
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Tensile Strength (LBS)
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Max. Allowable Load (LBS)
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Overall Width (A)
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Inside Link Width (W)
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Sidebar Thickness (T)
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Sidebar Height (H)
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Pin Diameter (D)
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Pin Length (L)
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1.75" | 2.50" | 18.0" | 50,000 | 4,000 | 1.45" | 0.64" | 0.31" | 1.40" | 0.63" | 1.45" | 3.90 |
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2.50" | 3.00" | 20.0" | 48,000 | 4,000 | 1.50" | 0.63" | 0.25" | 1.25" | 0.57" | 1.46" | 3.30 |
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3.00" | 3.00" | 22.0" | 48,000 | 4,000 | 1.50" | 0.63" | 0.25" | 1.25" | 0.57" | 1.46" | 3.30 |
Plastic DF3500 Chain:
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Center Bar
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Side Bar Pitch
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Min. Flex Radius
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Tensile Strength (LBS)
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Max. Allowable Load (LBS)
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Overall Width (A)
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Inside Link Width (W)
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Sidebar Thickness (T)
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Sidebar Height (H)
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Pin Diameter (D)
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Pin Length (L)
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2.50" | 3.00" | 20.0" | 27,000 | 725 | 1.50" | 0.63" | 0.25" | 1.25" | 0.57" | 1.46" | 0.81 |
Double Flex Chain Sprockets
Please note that we also offer sprockets that are not on the below charts. Contact us for more information or to get a quote.DF3498 Sprockets:
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1.750" | 1.400" | 0.575" | 7 | 1.250" | -- | 9.557" | -- | -- | A | 12.0 |
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1.750" | 1.400" | 0.575" | 8 | 1.250" | -- | 10.899" | -- | -- | A | 15.0 |
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1.750" | 1.400" | 0.575" | 9 | 1.250" | -- | 12.243" | -- | -- | A | 19.0 |
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1.750" | 1.400" | 0.575" | 10 | 1.250" | -- | 13.589" | -- | -- | A | 24.0 |
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1.750" | 1.400" | 0.575" | 11 | 1.250" | -- | 14.936" | -- | -- | A | 29.0 |
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1.750" | 1.400" | 0.575" | 7 | 1.250" | 2.440" | 9.557" | 4.000" | 2.750" | C | 19.0 |
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1.750" | 1.400" | 0.575" | 8 | 1.250" | 2.440" | 10.899" | 4.000" | 2.750" | C | 22.0 |
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1.750" | 1.400" | 0.575" | 9 | 1.250" | 2.940" | 12.243" | 4.750" | 3.130" | C | 31.0 |
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1.750" | 1.400" | 0.575" | 10 | 1.250" | 2.940" | 13.589" | 4.750" | 3.130" | C | 35.0 |
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1.750" | 1.400" | 0.575" | 11 | 1.250" | 2.940" | 14.936" | 4.750" | 3.130" | C | 40.0 |
DF3500 Sprockets:
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2.500" | 1.250" | 0.575" | 5 | 1.250" | -- | 8.903" | -- | -- | A | 10.0 |
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2.500" | 1.250" | 0.575" | 6 | 1.250" | -- | 10.628" | -- | -- | A | 14.0 |
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2.500" | 1.250" | 0.575" | 7 | 1.250" | -- | 12.361" | -- | -- | A | 20.0 |
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2.500" | 1.250" | 0.575" | 5 | 1.250" | 2.940" | 8.903" | 4.500" | 2.000" | C | 22.0 |
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2.500" | 1.250" | 0.575" | 6 | 1.250" | 2.940" | 10.628" | 4.500" | 2.000" | C | 26.0 |
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2.500" | 1.250" | 0.575" | 7 | 1.250" | 2.940" | 12.361" | 5.500" | 2.000" | C | 31.0 |
DF3910 Sprockets:
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| 3.000" | 1.250" | 0.575" | 5 | 1.250" | -- | 9.708" | -- | -- | A | 12.0 | |
| 3.000" | 1.250" | 0.575" | 6 | 1.250" | -- | 11.591" | -- | -- | A | 17.0 | |
| 3.000" | 1.250" | 0.575" | 7 | 1.250" | -- | 13.482" | -- | -- | A | 23.0 | |
| 3.000" | 1.250" | 0.575" | 5 | 1.250" | 2.940" | 9.708" | 4.750" | 3.130" | C | 24.0 | |
| 3.000" | 1.250" | 0.575" | 6 | 1.250" | 2.940" | 11.591" | 4.750" | 3.130" | C | 29.0 | |
| 3.000" | 1.250" | 0.575" | 7 | 1.250" | 2.940" | 13.482" | 4.750" | 3.130" | C | 35.0 |
Frequently Asked Questions
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If your order is less than $300, no problem! Please give us a call at 407-347-3519 or email Sales@usarollerchain.com, and we will be happy to assist you!
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USA Roller Chain utilizes an extensive network of vendors and warehouses to ensure you get your items quickly! Our primary roller chain warehouse is located in Clermont, FL, but we have warehouses located all across the United States. Your order will be shipped from the closest warehouse to you that has your requested product in stock. This speeds up transit times and saves you money on shipping! If you have any questions about where an item will ship from, please CONTACT US
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In-stock items are typically shipped out in 1-3 business days.Made-to-order item lead times vary from 1-2 days up to 14-20+ weeks, depending on the product. If you need your items urgently, please let us know, and we will do our best to meet your required delivery date! If you have any questions, please CONTACT US
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If you are having an issue with your order, please CONTACT US as soon as possible so we can resolve it for you.
Most in-stock items can be returned within 30 days of the shipment date. MTO or Custom orders are not eligible for a return or refund. For a detailed explanation of our return policies, please click here.
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Absolutely! We may be called "USA Roller Chain", but we ship worldwide! Please CONTACT US for Export/International quotes or orders.